the.com/typo

a tiny finger-slip that can crash markets, sink ships, or birth a new word entirely

means a small mistake in typed or printed text, usually a misspelling or wrong keystroke rather than an error of knowledge.

from A 20th-century clipping of "typographical error," the trade phrase printers used for mistakes made at the type-case or keyboard rather than by the author. "Typographical" itself reaches back through Latin to the Greek typos, "an impression or stamp" — the mark left when something is struck. So a typo is, quite literally, a wrongly struck impression, shortened to a snappy little word the moment people typed fast enough to make plenty of them.

costly slip
A 1962 NASA hyphen typo doomed Mariner 1's rocket
word origin
Short for typographical error, coined for typesetters' mistakes
scam fuel
Typosquatters buy misspelled domains to ambush fat-fingered users
freudian cousin
Many typos reveal what you actually meant to say
profit center
eBay typos hide cheap items sellers misspelled into obscurity
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